## What is ELECTRIC CHARGE

According to William Gilbert Charge is something possessed by material objects that make it possible for them to expert electrical force and to respond to electrical force.

• me = 9.10940 × 10-31 kg
• mp = 1.67262 × 10-27 kg
• mn = 1.67493 × 10-27 kg

An electron repels another electron at a distance of 1 cm with a force = 2.3 × 10-24 N. this force is called electric force.

The electrons must have some additional property [other than their mass], which is responsible for the electric force between them. This additional property of electrons, which gives rise to electric force between 2 electrons, is called electric charge. Just as masses are responsible for the gravitational force, charges are responsible for electric force.

two protons placed at a distance of 1 cm also repel each other with the same force = 2.3 × 10-24 N. it show that protons also have charges which in magnitude, must be equal to charge on electron. Two neutrons placed at a distance of 1cm attract each other with a force = 1.9 × 10-60 N, which is the gravitational force due to their masses.